Kyle B. has created a Revit MEP Wish List . There is not a lot of action on it yet, but I see one of my current favorites "Riser Diagrams" seems well represented. Take the first step in getting what you want from Revit MEP by.... ah asking for it.
I'll also add this link to my side bar. All of my sidebar links to Autodesk pages have been updated in consideration of Autodesk's web site reorganization. Take a minute and peruse Autodesk's slick new look.